I think (and hope) I didn't say that anywhere. We also had to different kind of "buttons" so far. Headphone speaker and regular speaker. This is another kind of key, the other one was a car key with the typical black pastic piece (hilt? handle?). Sorry if I made a wrong impression on that part.

Yes exactly, it's a pin used for sewing for example, but one without a colorful tip. I am impressed it was solved so fast.
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I must confuse you with more blurriness to make it harder: